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Just wanted to start this thread to document where I'm going with my car. I'm a big fan of dyno results versus butt-dyno feeling. I like to make sure I get some bang out of my buck. Hopefully this thread will give people some reference when they are looking for NA mods.

If you have any good solid before/after dynos (corrected numbers) feel free to post them with an explanation. I'll start off by posting what I have so far....

Mid February, I'll be borrowing a Conforti intake to see what sort of difference. The dyno above doesn't show my A/F, but I'll make sure it's posted on the next dyno. After that, I'll be installing a bored throttle-body. We'll see what we can squeeze out of her without FI or extreme measures

I followed your install thread and found that this to be quite amazing. My car, with intake, pullies and exhaust probably touches 200whp - your car has a whopping 30 more whp! Given the price of ZHP cams (600) and ebay headers (100) it would theoretically cost someone ~$700 in parts to add a solid 20whp to their M54B30 - talk about about budget modding!

so have you tried some pulls against anyone yet? e36 M3's make about 220 to the wheels...

I'll make an uneducated guess and say your car can make another 8whp with a proper tune.

I haven't run anyone with this setup. I'm sure I could hold my own I'm planning on getting to the track this spring.

Quote:

Originally Posted by Keno

I followed your install thread and found that this to be quite amazing. My car, with intake, pullies and exhaust probably touches 200whp - your car has a whopping 30 more whp! Given the price of ZHP cams (600) and ebay headers (100) it would theoretically cost someone ~$700 in parts to add a solid 20whp to their M54B30 - talk about about budget modding!

so have you tried some pulls against anyone yet? e36 M3's make about 220 to the wheels...

I'll make an uneducated guess and say your car can make another 8whp with a proper tune.

I've dynod this car 3 times so far. The first two times were with a Conforti intake, 3rd time was with a Conforti intake and Technik Gen 3 headers. Unfortunately, I don't have the dyno file from the second time I dynoed it but it was right around 204 or 205whp. Looks like a 13-17whp gain.
Ignore the lean AFR #'s, they're not right.

Hit the dyno yesterday with my "custom" intake. While I used the same dyno, the main variable was that it was about 50 degrees hotter. Intake temps on my friend's 350z were over 100. The dyno operator is supposed to email me the files tomorrow so I can do an overlay from my last.

With the hotter temps, it still showed a gain of 1hp and 5tq - 231hp/220tq (if I remember correctly, forgot my printout).

Hit the dyno yesterday with my "custom" intake. While I used the same dyno, the main variable was that it was about 50 degrees hotter. Intake temps on my friend's 350z were over 100. The dyno operator is supposed to email me the files tomorrow so I can do an overlay from my last.

With the hotter temps, it still showed a gain of 1hp and 5tq - 231hp/220tq (if I remember correctly, forgot my printout).

Just a custom filter setup. If I had spent that kind of money and made that small of a gain, I'd be quite upset.

Basically, I gutted my airbox, used a 3.5 to 4 inch silicone elbow to a 4 inch velocity stack (6 inch on the outside) and stuck on a huge cone filter. I keep my factory airbox and get more/smoother flow. I'm guessing that went a long way towards the added torque.

The velocity stack probably helped the MAF read the added airflow better, but I think that design is questionable. I would tell you to consider a tube that extends into the bumper, and have a bypass valve (made by AEM) to prevent hydrolock. I will say that when I had my custom cold air intake set up (long tube type) I felt a boost in torque as well. They say it's due to the resonance of the tube and intake pulse, and other psychics that are above my pay grade. Great job though, I respect your methods and the information that you provide to the community.

If I ever go with an intake that runs into the front bumper, I'd like to go with the Pipercross (like UUC used to sell).

If anyone wants to send me a Dinan or Cosmos, I'd be happy to bolt it up and go get it tested against mine.

Brady

Quote:

Originally Posted by Iceman00

The velocity stack probably helped the MAF read the added airflow better, but I think that design is questionable. I would tell you to consider a tube that extends into the bumper, and have a bypass valve (made by AEM) to prevent hydrolock. I will say that when I had my custom cold air intake set up (long tube type) I felt a boost in torque as well. They say it's due to the resonance of the tube and intake pulse, and other psychics that are above my pay grade. Great job though, I respect your methods and the information that you provide to the community.